EP3986845A1 - Granulé de polyhalite et de roche phosphatée et procédé de compactage pour le produire - Google Patents

Granulé de polyhalite et de roche phosphatée et procédé de compactage pour le produire

Info

Publication number
EP3986845A1
EP3986845A1 EP21823170.2A EP21823170A EP3986845A1 EP 3986845 A1 EP3986845 A1 EP 3986845A1 EP 21823170 A EP21823170 A EP 21823170A EP 3986845 A1 EP3986845 A1 EP 3986845A1
Authority
EP
European Patent Office
Prior art keywords
granule
polyhalite
phosphate rock
particles
drying
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21823170.2A
Other languages
German (de)
English (en)
Other versions
EP3986845A4 (fr
Inventor
Khalil Abu-Rabeah
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ICL Europe Cooperatief UA
Original Assignee
ICL Europe Cooperatief UA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ICL Europe Cooperatief UA filed Critical ICL Europe Cooperatief UA
Priority claimed from PCT/IL2021/050843 external-priority patent/WO2022043985A1/fr
Publication of EP3986845A1 publication Critical patent/EP3986845A1/fr
Publication of EP3986845A4 publication Critical patent/EP3986845A4/fr
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B17/00—Other phosphatic fertilisers, e.g. soft rock phosphates, bone meal
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B19/00—Granulation or pelletisation of phosphatic fertilisers, other than slag
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B3/00—Fertilisers based essentially on di-calcium phosphate
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
    • C05D1/00—Fertilisers containing potassium
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
    • C05D3/00—Calcareous fertilisers
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
    • C05D3/00—Calcareous fertilisers
    • C05D3/02—Calcareous fertilisers from limestone, calcium carbonate, calcium hydrate, slaked lime, calcium oxide, waste calcium products
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
    • C05D5/00—Fertilisers containing magnesium
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
    • C05D9/00—Other inorganic fertilisers
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F3/00—Fertilisers from human or animal excrements, e.g. manure
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G1/00—Mixtures of fertilisers belonging individually to different subclasses of C05
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G5/00—Fertilisers characterised by their form
    • C05G5/10—Solid or semi-solid fertilisers, e.g. powders
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G5/00—Fertilisers characterised by their form
    • C05G5/10—Solid or semi-solid fertilisers, e.g. powders
    • C05G5/12—Granules or flakes
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G5/00—Fertilisers characterised by their form
    • C05G5/40—Fertilisers incorporated into a matrix

Definitions

  • the present invention relates to the field of fertilizers, specifically to production of compacted polyhalite and phosphate rock.
  • plants need nutrients (nitrogen, potassium, calcium, zinc, magnesium, iron, manganese, etc.) which normally can be found in the soil.
  • nutrients nitrogen, potassium, calcium, zinc, magnesium, iron, manganese, etc.
  • fertilizers are needed to achieve a desired plant growth as these can enhance the growth of plants.
  • Fertilizers typically provide, in varying proportions, three main macronutrients:
  • Potassium (K) Strong stem growth, movement of water in plants, promotion of flowering and fruiting; three secondary macronutrients: calcium (Ca), magnesium (Mg), and
  • S Sulphur
  • micronutrients copper (Cu), iron (Fe), manganese (Mn), molybdenum (Mo), zinc (Zn), boron (B), and of occasional significance there are silicon (Si), cobalt (Co), and vanadium (V) plus rare mineral catalysts.
  • slow release fertilizers SRF
  • controlled release fertilizers CRF
  • Solid fertilizers include granules, prills, crystals and powders.
  • a prilled fertilizer is a type of granular fertilizer that is nearly spherical made by solidifying free-falling droplets in air or a fluid medium.
  • Most controlled- release fertilizers (CRFs) used in commercial nurseries are prilled fertilizers that have been coated with sulfur or a polymer.
  • Polyhalite is an evaporite mineral, a hydrated sulfate of potassium, calcium and magnesium with formula: K2Ca2Mg(SO4)4 2H2O. Polyhalite is used as a fertilizer since it contains four important nutrients and is low in chloride: 48% SO3 as sulfate 14% K 2 O 6% MgO 17% CaO
  • a granule comprising polyhalite and phosphate rock, in a ratio of between 30:70 to 70:30, respectively, preferably between 60:40-40:60.
  • the strength of the granule may be at least 0.8 Kg/Granule without drying, preferably at least 1 Kg/Granule without drying.
  • the granule may further include a binder selected from the group of starch, molasses, manure bentonite, sodium silicate, lignosulfonates, venasses, hydrated lime, bitumen, Portland cement, clay, cellulose gum, sucrose, water, water glass, cements, Fly Ash, Potassium and Sodium Silicate, MgO, CaO, Geo-polymers, oils and waxes and the like, or a combination thereof.
  • a binder selected from the group of starch, molasses, manure bentonite, sodium silicate, lignosulfonates, venasses, hydrated lime, bitumen, Portland cement, clay, cellulose gum, sucrose, water, water glass, cements, Fly Ash, Potassium and Sodium Silicate, MgO, CaO, Geo-polymers, oils and waxes and the like, or a combination thereof.
  • the binder may preferably be starch, lignosulphonate, Molasses, Manure and/or Venasses.
  • a process for the compaction of Polyhalite with Phosphate rock comprising: crushing or screening of the polyhalite to less than 2mm; crushing or screening of the phosphate rock to less than 2 mm; mixing said polyhalite with said Phosphate rock in a mixer to yield a mixture; compacting said mixture in a compactor to yield masses; crushing said masses in a crusher to yield particles; and screening said particles in a screener to yield different particles in three different sizes: oversized particles which undergo a second crushing process and are retuned to screener for screening; undersized particles which are transferred to mixer for further mixing with the feed; and desired size granular particles which are transferred to a polish screener.
  • the process may further include adding a binder to the mixture prior to compacting the mixture.
  • the ratio between of Polyhalite and phosphate rock may be 58:38, respectively.
  • a fertilizer granule including polyhalite and phosphate rock in a ratio of between 30:70 to 70:30, respectively.
  • the granule of the present invention may contain K2O, P, SO4, Mg and ,Ca, yet the unique combination of Polyhalite and phosphate rock may supply the plants with essential macro-elements such as K, P Ca, Mg and S via a single granule.
  • both the Polyhalite and the Phosphate rock are both used naturally in the granule without the need to undergo any chemical modification, for example, this allows for better plant growth and obviates the need for further industrial processing.
  • the specific use of phosphate rock together with Polyhalite enables, e.g., due to the existence of carbonate, the effective use of the granule of the present invention in acidic soils.
  • the granule may contain K2O, P, SO4, Mg and ,Ca,
  • a fertilizer granule comprising Polyhalite and Phosphate rock and optionally a binder; wherein the ratio between Polyhalite and Phosphate rock may be 30:70 to 70:30, respectively.
  • a process for the compaction of Polyhalite with a Phosphate rock which may include: crushing or screening (or both) of the polyhalite to less than ⁇ 2mm . crushing or screening (or both) of the phosphate rock to less than 2 mm.
  • the mixture for the compactor contains 40-60% to 60-40 % of Polyhalite and phosphate rock, respectively.
  • the mixing may be performed in a blade blender and/or any other suitable devise capable of having a s mixing that creates a swirling motion for a perfect homogenization and a high blending precision, e.g., a Ploughshare ® Mixer.
  • the compaction be a wet compaction.
  • the compaction process may include the addition of a binder 1-5% w/w.
  • the binder may include but not limited : for example, organic or inorganic binders, such as, starch, molasses, manure bentonite, sodium silicate, lignosulfonates, venasses, hydrated lime, bitumen, Portland cement, clay, cellulose gum, sucrose, water, water glass, cements, Fly Ash, Potassium and Sodium Silicate, MgO, CaO, geopolymers, oils and waxes and the like, or a combination thereof.
  • the compaction process may include the following steps:
  • micronutrients may be added to the mixture, and water may be added between 0.5 - 4% w/w , preferably 3% w/w.
  • the process may include adding organic or inorganic binder between 1-5% w/w preferably and more preferable between 2-4% w/w.
  • the mixture may be heated to a temperature between 80-180 °C, preferably 160°C.
  • Desired sized flakes between 12- 33 mm thickness, S.G. between 1.9 to 2.4 g/cm3.
  • the desired size of the flakes is between 1-6 mm, most preferably between 2-4 mm.
  • Oversized (OS) flakes - are returned to the grinding stage, e.g., between 4-25% w/w of the total resulting flakes.
  • Undersized (US) flakes - are recycled to the mixture for compaction, e.g., between 10 to 80% w/w of the total flakes.
  • a binder may be added in a concentration of between 0.01-7% w/w, preferably between 1-5% w/w, most preferably between 2-4% w/w.
  • the final product may submitted to posttreatment, including, for example, oil or derivatives or inorganic materials that may be added to the resulting granules, e.g., to improve the rheology, protect the granules against weather or abrasion of the product and diminish dust formation. Polishing the granules or Coating.
  • the resulting flakes/granules may be glazed and further coated with a suitable coating.
  • the coatings may include biodegradable coatings, sustained release coatings, controlled release coatings, oily coatings, wax coatings.
  • the compacting process may include the following steps:
  • Example 9 58% phosphate rock +38 polyhalite+1 % Venasses+3% water.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Fertilizers (AREA)
  • Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
  • Materials For Medical Uses (AREA)

Abstract

Selon certains modes de réalisation, l'invention concerne un granulé comprenant de la polyhalite et de la roche phosphatée, dans un rapport allant de 30:70 à 70:30, respectivement.
EP21823170.2A 2020-08-24 2021-07-10 Granulé de polyhalite et de roche phosphatée et procédé de compactage pour le produire Pending EP3986845A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202063069314P 2020-08-24 2020-08-24
PCT/IL2021/050843 WO2022043985A1 (fr) 2020-08-24 2021-07-10 Granulé de polyhalite et de roche phosphatée et procédé de compactage pour le produire

Publications (2)

Publication Number Publication Date
EP3986845A1 true EP3986845A1 (fr) 2022-04-27
EP3986845A4 EP3986845A4 (fr) 2023-08-09

Family

ID=79551957

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21823170.2A Pending EP3986845A4 (fr) 2020-08-24 2021-07-10 Granulé de polyhalite et de roche phosphatée et procédé de compactage pour le produire

Country Status (4)

Country Link
US (1) US12049432B2 (fr)
EP (1) EP3986845A4 (fr)
BR (1) BR112021026503A2 (fr)
IL (1) IL287895A (fr)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA630979A (en) * 1961-11-14 International Minerals And Chemical Corporation Granular fertilizer and process for producing same
US2912317A (en) * 1957-08-12 1959-11-10 Int Minerals & Chem Corp Granular fertilizer and process of producing same
US4246019A (en) * 1979-02-21 1981-01-20 Sokolov Igor D Method of producing a complex mineral fertilizer
US5174804A (en) * 1989-09-29 1992-12-29 Vigoro Industries, Inc. Fertilizer/pesticide composition and method of treating plants
US20060063674A1 (en) * 2004-09-23 2006-03-23 Morris Robert S Jr Methods and apparatus for delivering time-release fertilizer
US10913689B2 (en) * 2015-05-19 2021-02-09 Sulvaris Inc. Fertilizer pellets with micronized sulphur
CN105603179A (zh) * 2016-01-13 2016-05-25 铜陵百荣新型材料铸件有限公司 一种磷矿粉造粒成型烧结工艺
US11591276B2 (en) * 2018-09-09 2023-02-28 Cotex Technologies Inc. System and method for manufacturing polymer coated controlled release fertilizers
EP3883693A4 (fr) * 2018-11-23 2022-08-24 ICL Europe Cooperatief U.A. Polyhalite compactée et procédé pour la produire
IL277452B2 (en) * 2018-11-23 2024-04-01 ICL Europe Cooperatief UA Granules of polyhalite and potash

Also Published As

Publication number Publication date
US12049432B2 (en) 2024-07-30
IL287895A (en) 2022-01-01
EP3986845A4 (fr) 2023-08-09
BR112021026503A2 (pt) 2023-02-28
US20230271889A1 (en) 2023-08-31

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